When charging below 1.5A (1500mA), it is OK to charge through just the balancer leads, indicated by the "Low Amp" options in the diagram above.
When charging over 1.5A, it is recommended to charge through the main battery leads
, and use the balance connector just for balancing. This configuration is indicated by the "High Amp" options in the diagram above. This is because the balancer leads and associated wires are too small to handle higher charge currents and may cause erroneous balancer operation due to potential voltage drop.
You may notice that when any of the "High Amp" options is selected, one of the balancer wires is unused. This is intentional as a safety precaution! If all
balancer wires were used in conjunction with the main leads, and the balancer connectors were inadverdently swapped, damage will
result in the balancer wire, connector, battery, or any combination of these! I usually zip-tie each balancer wire to the accociated charging lead for added safety.
Below is a picture of a completed 2s + 2s balancer/charging Y adaptor created with the "High Amp" option. The wire length was properly sized for use with the Hyperion LBA10 balancer unit. Also, the wires were extended to allow enough wire slack for easy placement into a fire-resistant container such as the Lipo Sack, Battery Bunker, etc.